We report on the scattering properties of oxygenated and deoxygenated whole blood from 250 to 1000 nm. We determine the complex refractive index of oxygenated and deoxygenated hemoglobin using a Kramers-Kronig analysis and optical coherence tomography measurements. Combining these data with Mie theory, the scattering properties are calculated. The strong oxygen saturation dependent scattering e...

A possibility has been studied of the process oxygen transfer to tissues through capillaries. Oxymetry principle is applied at microscopic level. prototype device designed and manufactured based on a measuring microscope spatially high-definition videocamera. Proposed illumination schematic. The instrument structure described including its parts, as well idea image processing, latter being acqu...

Limited information exists concerning arterial blood pressure (BP) changes in underwater breath-hold diving. Simulated chamber dives to 50 m of freshwater (mfw) reported very high levels of invasive BP in two divers during static apnea (SA), whereas a recent study using a noninvasive subaquatic sphygmomanometer reported unchanged or mildly increased values at 10 m SA dive. In this study we inve...

Vasospasms occur in 30 % of patients after subarachnoid haemorrhage (SAH). The most severe spasms are in patients with Hunt and Hess IV and V, who have usually much blood in the basal cisterns. According to some reports, hypothermia could decrease the incidence and severity of vasospasms in these patients. We have analysed 15 patients (HH IV and V) after SAH from a ruptured intracranial aneurys...

AIM To determine if oxygen saturation in retinal vessels depends on the degree of diabetic retinopathy. MATERIAL AND METHODS A prospective study comparing values of oxygen saturation in retinal arteries, veins, and arterio - venous (A-V) difference in healthy persons and in patients with diagnosed diabetes. The study included 114 eyes of 76 patients with diagnosed diabetes, and 57 eyes of 57 ...